Is there a person who you have spent five years thinking about and never forget? Has anyone ever left you when you truly felt happy? Is there someone who is silent but willing to stay by your side just to be with you? Song Zifei, who has delicate feelings and is willing to risk everything for love; Pei Le, who once swore to cherish her all his life but flew away alone; Yi Junlin, the proud son of heaven, was such an indifferent man who only fell in love with her. He witnessed her brightness and her loss, but still never left her. Five years later, when Pei Le returns, how should she choose?